Interior Door Rough Opening Size

Measure your door carefully and cut the opening to fit using a reciprocating saw.

Interior door rough opening size.

While a standard door height is 80 finished opening. Measure the opening to your door frame. Determine the size of the door opening. Standard door rough openings.

This can be done with an existing door finished opening or a rough opening where you can see the 2x4 s. Framing rough opening sizes are really quite simple. The size of the door opening will vary depending on the size of the door you plan to install. The 6 8 stands for 6 8 tall and the 3 0 stands for 3 0 wide.

This takes into account the thickness of a standard 3 4 inch doorjamb on each side. You should add 2 1 2 to the height of the actual door. The height of common doors is 6 feet 8 inches. For fire rated openings drywall must extend at least 1 2 into frame.

Interior knockdown frames that wrap wall a opening width 2 b opening height 1 the rough opening would be 38 x 85 for a 3 0 x 7 0 door frame. Masonite strives to provide our customers with as much information as possible so you can get the right door the first time. Entry doors are usually 36 inches wide. For example let s say we want to frame a 6 8 x 3 0 front entry door.

Typically a pre hung door is measured in 30 inch and 36 inch sizes with additional sizes available in non standard widths. Refer to the. The standard height of the rough opening for a door is the door height plus 2 5 8 inches. The additional room allows for a 3 4 inch top jamb a shim.

Add 2 to 2 1 2 inch to the measurement of the door s width to determine the total width of the rough opening. Download all the technical information and data on specifications use and maintenance for all our doors now. While a door width of 36 inches is oversized for an interior door it s the standard size for front doors the standard height remains the same however. Just add 2 to the width of the actual door size.

Getting the rough opening size right the first time will save you from frustration when installing your doors. Therefore the rough opening would be 82 1 2 tall by 38 1 2 wide. The difference between a rough opening and finished opening is usually 2 3 inches. A typical door opening is 2 inches 5 1 cm wider than the door size being installed to allow for the thickness of the jamb material and shims to plumb the jamb.

For reference standard interior door widths range from 24 36 finished opening.